Reef Rax

Purple Nano Rock Double Frag Rack

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$18.70 $22.00

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Make your prized coral frags stand out with the Nano Rock Double Frag Rack on tanks up to 1/4" thick. Reef Rax Frag Racks mount to your aquariums glass or acrylic with their strong reef safe magnets that can be placed almost anywhere in your tank. 

Dimensions - 4" L x 2" W x 2.375" H

  • No curing required
  • Doesn't leach
  • Coated reef-safe magnets
  • Multiple colors and shapes


Traditional coral frag holders are designed for frag tanks and made of egg crate, and if you ever put one in your display tank, they are an instant eyesore. Reef Rax has produced custom molds that simulate real live rock structures and textures at a fraction of the weight. 

Reef Rax Nano frag rocks are made of a highly porous resin structure that is almost buoyant when it is first placed in your tank. The neutral buoyancy greatly helps with its ability to hold heavy frag plugs and large frags of coral. Each rack includes reef safe magnets that can support the Nano Double Rock on tanks up to 1/4" thick.


Nano Rock Double Frag Rack

With pre-drilled spots for two frags plug that can hold your prized frags. Using the double nano frag rack, you can isolate your coral from other potential dangers, and the magnetic mounting lets you move the coral to the perfect spot for lighting and flow. 


Coralline Purple Color

Reef Rax custom purple coloration resembles coralline encrusted live rock and is the perfect addition to any seasoned aquascape. Over time additional coralline algae will encrust the rack creating beautiful purple tones adding to the color depth. If you have a new aquascape with dry live rock we suggest looking into the Grey or Dark Brown Reef Rax.



Dimensions - 4" L x 2" W x 2.375" H

Frag Hole Size - 0.45" diameter

Number of Holes - 2

Max Tank Thickness - 1/4"


What's Included?

1x Reef Rax Nano Rock Double Frag Rack

1x Magnet Assemblies

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Product Questions

Says magnets are reef safe - does that include the magnets that would traditionally go on the outside of the tank? Thinking I would want to hang on the wall of my AIO which would require the magnets to go into the AIO chambers in order to hang the rack in the display.
Question by: Jason on Jan 27, 2022, 3:17 PM
Yes, those magnets are coated and can be submerged.
Answer by: Matt Lucero (BRS Staff) on Feb 2, 2022, 2:40 PM